Markus Henriksen, who was a target for Celtic boss Neil Lennon, has left Rosenborg to sign for Dutch outfit AZ Alkmaar.
The highly-rated midfielder was among those under consideration by Celtic's management as they look to strike before the summer transfer window slams shut.
They will, however, be forced to turn their attention elsewhere after seeing the 20-year-old opt to make a fresh start in Holland.
Henriksen will undergo a medical at AZ on Wednesday before putting the finishing touches to a switch.
He believes he has taken the best decision at this stage of his career and is looking forward to testing himself in the Eredivisie.
"It was not an easy decision to move," Henriksen told Adresseavisen.
"I am a homebody and, additionally, I have strong connections with Rosenborg.
"At the same time, I feel it is the right club for me and I have the chance to progress in my football career."
Rosenborg have also offered their take on the deal, with it the opinion of the Norwegian outfit that the agreement reached with AZ will be beneficial to all concerned.
"We would not have sold him if we were not happy with the offer," said sporting director Erik Hoftun.
"AZ is one of the top clubs in the Netherlands and play regularly in Europe. The league is good and it's a good step for Markus."